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Q21.12

Patent foramen ovale

Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 2 never code together
Q21code
Excludes1
  • acquired cardiac septal defect (I51.0)I51.0
Q21.1code
Excludes2
  • ostium primum atrial septal defect (type I) (Q21.20)Q21.20

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 1
Q21.12code
Inclusion terms
  • Persistent foramen ovale
Index entries leading here 8
  • Anomaly, anomalous (congenital) (unspecified type) Q89.9
  • Nonclosure — see also Imperfect, closure
  • Imperfect
  • Patent — see also Imperfect, closure
  • Persistence, persistent (congenital)
  • Closure
    • foramen ovale, imperfect Q21.12
  • Cyanosis R23.0
    • due to
      • persistent foramen ovale Q21.12
      • patent foramen botalli Q21.12
  • Foramen ovale (nonclosure) (patent) (persistent) Q21.12
Alongside this code 7 same parent — Q21.1
Q21.10 Atrial septal defect, unspecified Q21.11 Secundum atrial septal defect Q21.13 Coronary sinus atrial septal defect Q21.14 Superior sinus venosus atrial septal defect Q21.15 Inferior sinus venosus atrial septal defect Q21.16 Sinus venosus atrial septal defect, unspecified Q21.19 Other specified atrial septal defect
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
yes
Code set
FY2026
Parent
Q21.1
Block
Q20-Q28
Siblings
7

Present FY2024–FY2027.